From 5708e35ee04796d06ccf9eae606f82fb041a9cc9 Mon Sep 17 00:00:00 2001
From: Mario Fetka <mario@localhost.localdomain>
Date: Wed, 11 Mar 2020 11:39:28 +0100
Subject: [PATCH] Imported Upstream version 0.2

---
 .travis.yml             |  8 +++++---
 mod_proxy_protocol.c    |  8 ++++++--
 mod_proxy_protocol.html | 24 ++++++++++++++++++++++--
 3 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 4ae464c..8023d57 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,10 @@ compiler:
 install:
   # for unit tests
   - sudo apt-get install -y check
+  - sudo apt-get install -y libsubunit-dev
   # for static code analysis
-  - sudo apt-get install -y cppcheck rats
+  # - sudo apt-get install -y cppcheck
+  # - sudo apt-get install -y rats
   # for test code coverage
   - sudo apt-get install -y lcov
   - gem install coveralls-lcov
@@ -23,8 +25,8 @@ script:
   - git clone --depth 10 https://github.com/proftpd/proftpd.git
   - cp mod_proxy_protocol.c proftpd/contrib/
   - cd proftpd
-  - ./configure LIBS="-lm -lrt -pthread" --enable-devel=coverage --enable-tests --with-module=mod_proxy_protocol
+  - ./configure LIBS="-lm -lsubunit -lrt -pthread" --enable-devel=coverage --enable-tests --with-module=mod_proxy_protocol
   - make
   - make clean
-  - ./configure LIBS="-lm -lrt -pthread" --enable-devel=coverage --enable-dso --enable-tests --with-shared=mod_proxy_protocol
+  - ./configure LIBS="-lm -lsubunit -lrt -pthread" --enable-devel=coverage --enable-dso --enable-tests --with-shared=mod_proxy_protocol
   - make
diff --git a/mod_proxy_protocol.c b/mod_proxy_protocol.c
index 28bd7fe..36e9d7f 100644
--- a/mod_proxy_protocol.c
+++ b/mod_proxy_protocol.c
@@ -1,6 +1,6 @@
 /*
  * ProFTPD - mod_proxy_protocol
- * Copyright (c) 2013-2017 TJ Saunders
+ * Copyright (c) 2013-2020 TJ Saunders
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,7 +26,11 @@
 #include "conf.h"
 #include "privs.h"
 
-#define MOD_PROXY_PROTOCOL_VERSION	"mod_proxy_protocol/0.1"
+#ifdef HAVE_SYS_UIO_H
+# include <sys/uio.h>
+#endif /* HAVE_SYS_UIO_H */
+
+#define MOD_PROXY_PROTOCOL_VERSION	"mod_proxy_protocol/0.2"
 
 /* Make sure the version of proftpd is as necessary. */
 #if PROFTPD_VERSION_NUMBER < 0x0001030504
diff --git a/mod_proxy_protocol.html b/mod_proxy_protocol.html
index ddd2d00..10fa510 100644
--- a/mod_proxy_protocol.html
+++ b/mod_proxy_protocol.html
@@ -140,6 +140,27 @@ of <code>LoadModule</code> directives; the last of which would be:
   LoadModule mod_proxy_protocol.c
 </pre>
 
+<b>Note</b> that using <code>mod_proxy_protocol</code> as a shared module
+is <i>required</i> in cases where you want to use both
+<code>mod_proxy_protocol</code> <i>and</i> <code>mod_ifsession</code>.  For
+example, perhaps you want to use <code>mod_ifsession</code> to change the
+behavior of some module, <i>e.g.</i> <code>mod_ban</code>, based on the IP
+address of the original client.  This means that <code>mod_proxy_protocol</code>
+would need to hande the connection <i>first</i>, so that it can decode the
+<code>PROXY</code> protocol and set the correct client IP address.
+<i>However</i>, the ProFTPD build system is hardcoded to ensure that the
+<code>mod_ifsession</code> will always be first -- <i>if</i> using static
+modules.  By using <i>shared</i> modules, you can enforce the proper ordering
+using the <code>LoadModule</code> directive, like so:
+<pre>
+  &lt;IfModule mod_dso.c&gt;
+    ...
+    LoadModule mod_ifsession.c
+    LoadModule mod_proxy_protocol.c
+  &lt;/IfModule&gt;
+</pre>
+The <i>last</i> module loaded will be the <i>first</i> module called.
+
 <p>
 <b>Trusting Senders of Proxy Data</b><br>
 Use of these proxy protocols means changes in audit trails and/or client
@@ -227,11 +248,10 @@ to your existing server:
 <p>
 <hr>
 <font size=2><b><i>
-&copy; Copyright 2013-2017 TJ Saunders<br>
+&copy; Copyright 2013-2019 TJ Saunders<br>
  All Rights Reserved<br>
 </i></b></font>
 
 <hr>
 </body>
 </html>
-